US20230002676A1 - Treatment liquid and treatment liquid container - Google Patents
Treatment liquid and treatment liquid container Download PDFInfo
- Publication number
- US20230002676A1 US20230002676A1 US17/900,008 US202217900008A US2023002676A1 US 20230002676 A1 US20230002676 A1 US 20230002676A1 US 202217900008 A US202217900008 A US 202217900008A US 2023002676 A1 US2023002676 A1 US 2023002676A1
- Authority
- US
- United States
- Prior art keywords
- acid
- treatment liquid
- acetate
- group
- peracetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011282 treatment Methods 0.000 title claims abstract description 252
- 239000007788 liquid Substances 0.000 title claims abstract description 225
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims abstract description 133
- 239000000654 additive Substances 0.000 claims abstract description 116
- 230000000996 additive effect Effects 0.000 claims abstract description 114
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 66
- 239000002904 solvent Substances 0.000 claims abstract description 46
- 239000007800 oxidant agent Substances 0.000 claims abstract description 45
- 230000001590 oxidative effect Effects 0.000 claims abstract description 45
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- -1 nitrogen-containing heterocyclic compound Chemical class 0.000 claims description 205
- 239000002253 acid Substances 0.000 claims description 146
- 150000001875 compounds Chemical class 0.000 claims description 107
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 104
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 57
- 150000003839 salts Chemical class 0.000 claims description 57
- 229920000642 polymer Polymers 0.000 claims description 55
- 229940044654 phenolsulfonic acid Drugs 0.000 claims description 47
- 239000003945 anionic surfactant Substances 0.000 claims description 45
- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 claims description 44
- LGNQGTFARHLQFB-UHFFFAOYSA-N 1-dodecyl-2-phenoxybenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1OC1=CC=CC=C1 LGNQGTFARHLQFB-UHFFFAOYSA-N 0.000 claims description 40
- 239000002202 Polyethylene glycol Substances 0.000 claims description 37
- 229920001223 polyethylene glycol Polymers 0.000 claims description 37
- 229920002873 Polyethylenimine Polymers 0.000 claims description 36
- 125000004429 atom Chemical group 0.000 claims description 31
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims description 30
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 27
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 27
- 125000003118 aryl group Chemical group 0.000 claims description 27
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 25
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 24
- 239000003093 cationic surfactant Substances 0.000 claims description 22
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 22
- 150000005215 alkyl ethers Chemical class 0.000 claims description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 238000007872 degassing Methods 0.000 claims description 20
- 239000002280 amphoteric surfactant Substances 0.000 claims description 19
- 239000002736 nonionic surfactant Substances 0.000 claims description 19
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 18
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 18
- 229920006318 anionic polymer Polymers 0.000 claims description 18
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 18
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 17
- 229910052796 boron Inorganic materials 0.000 claims description 17
- YDSWCNNOKPMOTP-UHFFFAOYSA-N mellitic acid Chemical compound OC(=O)C1=C(C(O)=O)C(C(O)=O)=C(C(O)=O)C(C(O)=O)=C1C(O)=O YDSWCNNOKPMOTP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 15
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 claims description 15
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- 150000003973 alkyl amines Chemical class 0.000 claims description 15
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 15
- 235000001014 amino acid Nutrition 0.000 claims description 15
- 229940024606 amino acid Drugs 0.000 claims description 15
- 150000001413 amino acids Chemical class 0.000 claims description 15
- 150000004982 aromatic amines Chemical class 0.000 claims description 15
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 15
- 150000002978 peroxides Chemical group 0.000 claims description 15
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 15
- UJMDYLWCYJJYMO-UHFFFAOYSA-N benzene-1,2,3-tricarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1C(O)=O UJMDYLWCYJJYMO-UHFFFAOYSA-N 0.000 claims description 14
- RLGQACBPNDBWTB-UHFFFAOYSA-N cetyltrimethylammonium ion Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)C RLGQACBPNDBWTB-UHFFFAOYSA-N 0.000 claims description 14
- KQTIIICEAUMSDG-UHFFFAOYSA-N tricarballylic acid Chemical compound OC(=O)CC(C(O)=O)CC(O)=O KQTIIICEAUMSDG-UHFFFAOYSA-N 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 12
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 12
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 10
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 10
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 10
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 10
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 claims description 10
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 10
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 claims description 10
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 10
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 10
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 10
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 claims description 10
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 10
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 10
- CYDRXTMLKJDRQH-UHFFFAOYSA-N benzododecinium Chemical compound CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 CYDRXTMLKJDRQH-UHFFFAOYSA-N 0.000 claims description 10
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 10
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims description 10
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 10
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 10
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 claims description 10
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 10
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 10
- YLYBTZIQSIBWLI-UHFFFAOYSA-N octyl acetate Chemical compound CCCCCCCCOC(C)=O YLYBTZIQSIBWLI-UHFFFAOYSA-N 0.000 claims description 10
- PGMYKACGEOXYJE-UHFFFAOYSA-N pentyl acetate Chemical compound CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 claims description 10
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 10
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 claims description 10
- YKYONYBAUNKHLG-UHFFFAOYSA-N propyl acetate Chemical compound CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims description 10
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 10
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 10
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 claims description 10
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 10
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 9
- 229940092714 benzenesulfonic acid Drugs 0.000 claims description 9
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 9
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims description 8
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 claims description 8
- 235000018417 cysteine Nutrition 0.000 claims description 8
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 7
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 7
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 7
- 229960003330 pentetic acid Drugs 0.000 claims description 7
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- YFZDLRVCXDBOPH-UHFFFAOYSA-N tetraheptylazanium Chemical compound CCCCCCC[N+](CCCCCCC)(CCCCCCC)CCCCCCC YFZDLRVCXDBOPH-UHFFFAOYSA-N 0.000 claims description 7
- PDSVZUAJOIQXRK-UHFFFAOYSA-N trimethyl(octadecyl)azanium Chemical compound CCCCCCCCCCCCCCCCCC[N+](C)(C)C PDSVZUAJOIQXRK-UHFFFAOYSA-N 0.000 claims description 7
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 6
- WYMDDFRYORANCC-UHFFFAOYSA-N 2-[[3-[bis(carboxymethyl)amino]-2-hydroxypropyl]-(carboxymethyl)amino]acetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)CN(CC(O)=O)CC(O)=O WYMDDFRYORANCC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004475 Arginine Substances 0.000 claims description 6
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 6
- 229920000209 Hexadimethrine bromide Polymers 0.000 claims description 6
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 claims description 6
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 claims description 6
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 claims description 6
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004472 Lysine Substances 0.000 claims description 6
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 6
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 6
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 claims description 6
- 235000009697 arginine Nutrition 0.000 claims description 6
- 229960003872 benzethonium Drugs 0.000 claims description 6
- 229960003237 betaine Drugs 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- SIYLLGKDQZGJHK-UHFFFAOYSA-N dimethyl-(phenylmethyl)-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethyl]ammonium Chemical compound C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 SIYLLGKDQZGJHK-UHFFFAOYSA-N 0.000 claims description 6
- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical compound CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 claims description 6
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 235000006408 oxalic acid Nutrition 0.000 claims description 6
- MDHYEMXUFSJLGV-UHFFFAOYSA-N phenethyl acetate Chemical compound CC(=O)OCCC1=CC=CC=C1 MDHYEMXUFSJLGV-UHFFFAOYSA-N 0.000 claims description 6
- LKVHMIDEEJWEAI-UHFFFAOYSA-N tetrakis-decylazanium Chemical compound CCCCCCCCCC[N+](CCCCCCCCCC)(CCCCCCCCCC)CCCCCCCCCC LKVHMIDEEJWEAI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- IQVLXQGNLCPZCL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 2,6-bis[(2-methylpropan-2-yl)oxycarbonylamino]hexanoate Chemical compound CC(C)(C)OC(=O)NCCCCC(NC(=O)OC(C)(C)C)C(=O)ON1C(=O)CCC1=O IQVLXQGNLCPZCL-UHFFFAOYSA-N 0.000 claims description 5
- QBYIENPQHBMVBV-HFEGYEGKSA-N (2R)-2-hydroxy-2-phenylacetic acid Chemical compound O[C@@H](C(O)=O)c1ccccc1.O[C@@H](C(O)=O)c1ccccc1 QBYIENPQHBMVBV-HFEGYEGKSA-N 0.000 claims description 5
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 claims description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 5
- RBNPOMFGQQGHHO-UHFFFAOYSA-N -2,3-Dihydroxypropanoic acid Natural products OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 5
- FFYRIXSGFSWFAQ-UHFFFAOYSA-N 1-dodecylpyridin-1-ium Chemical compound CCCCCCCCCCCC[N+]1=CC=CC=C1 FFYRIXSGFSWFAQ-UHFFFAOYSA-N 0.000 claims description 5
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 5
- UGAGPNKCDRTDHP-UHFFFAOYSA-N 16-hydroxyhexadecanoic acid Chemical compound OCCCCCCCCCCCCCCCC(O)=O UGAGPNKCDRTDHP-UHFFFAOYSA-N 0.000 claims description 5
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 5
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims description 5
- MIJDSYMOBYNHOT-UHFFFAOYSA-N 2-(ethylamino)ethanol Chemical compound CCNCCO MIJDSYMOBYNHOT-UHFFFAOYSA-N 0.000 claims description 5
- XNCSCQSQSGDGES-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]propyl-(carboxymethyl)amino]acetic acid Chemical compound OC(=O)CN(CC(O)=O)C(C)CN(CC(O)=O)CC(O)=O XNCSCQSQSGDGES-UHFFFAOYSA-N 0.000 claims description 5
- XWSGEVNYFYKXCP-UHFFFAOYSA-N 2-[carboxymethyl(methyl)amino]acetic acid Chemical compound OC(=O)CN(C)CC(O)=O XWSGEVNYFYKXCP-UHFFFAOYSA-N 0.000 claims description 5
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 claims description 5
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims description 5
- LTHNHFOGQMKPOV-UHFFFAOYSA-N 2-ethylhexan-1-amine Chemical compound CCCCC(CC)CN LTHNHFOGQMKPOV-UHFFFAOYSA-N 0.000 claims description 5
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 5
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 5
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 5
- RBNPOMFGQQGHHO-UWTATZPHSA-N D-glyceric acid Chemical compound OC[C@@H](O)C(O)=O RBNPOMFGQQGHHO-UWTATZPHSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 5
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- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 1
- 239000001230 potassium iodate Substances 0.000 description 1
- 235000006666 potassium iodate Nutrition 0.000 description 1
- 229940093930 potassium iodate Drugs 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- VBKNTGMWIPUCRF-UHFFFAOYSA-M potassium;fluoride;hydrofluoride Chemical compound F.[F-].[K+] VBKNTGMWIPUCRF-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- BBFCIBZLAVOLCF-UHFFFAOYSA-N pyridin-1-ium;bromide Chemical compound Br.C1=CC=NC=C1 BBFCIBZLAVOLCF-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- XGVXKJKTISMIOW-ZDUSSCGKSA-N simurosertib Chemical compound N1N=CC(C=2SC=3C(=O)NC(=NC=3C=2)[C@H]2N3CCC(CC3)C2)=C1C XGVXKJKTISMIOW-ZDUSSCGKSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- QSUJAUYJBJRLKV-UHFFFAOYSA-M tetraethylazanium;fluoride Chemical compound [F-].CC[N+](CC)(CC)CC QSUJAUYJBJRLKV-UHFFFAOYSA-M 0.000 description 1
- ZEFWRWWINDLIIV-UHFFFAOYSA-N tetrafluorosilane;dihydrofluoride Chemical compound F.F.F[Si](F)(F)F ZEFWRWWINDLIIV-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- ASVMCHUOIVTKQQ-UHFFFAOYSA-M triethyl(methyl)azanium;fluoride Chemical compound [F-].CC[N+](C)(CC)CC ASVMCHUOIVTKQQ-UHFFFAOYSA-M 0.000 description 1
- BZWNJUCOSVQYLV-UHFFFAOYSA-H trifluoroalumane Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[Al+3].[Al+3] BZWNJUCOSVQYLV-UHFFFAOYSA-H 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1644—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
- C09K13/04—Etching, surface-brightening or pickling compositions containing an inorganic acid
- C09K13/08—Etching, surface-brightening or pickling compositions containing an inorganic acid containing a fluorine compound
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
- C09K13/04—Etching, surface-brightening or pickling compositions containing an inorganic acid
- C09K13/10—Etching, surface-brightening or pickling compositions containing an inorganic acid containing a boron compound
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
Definitions
- the present invention relates to a treatment liquid and a treatment liquid container.
- U.S. Pat. No. 10,414,978B discloses an etching composition containing peracetic acid, a fluorine compound, an acetate-based organic solvent, and 0.01% to 5% by mass of a predetermined silicon compound.
- the present invention has been accomplished in consideration of the above circumstances, and an object thereof is to provide a treatment liquid that exhibits excellent selectivity in dissolving SiGe in a case where SiGe is etched with the treatment liquid.
- Another object of the present invention is to provide a treatment liquid container relating to the treatment liquid.
- the inventors of the present invention conducted intensive studies. As a result, the inventors have found that the objects can be achieved by the following constitutions.
- the additive is an additive that does not contain a Si atom.
- a nonionic polymer an anionic polymer
- a nonionic surfactant an anionic surfactant
- a cationic surfactant an amphoteric surfactant
- a nitrogen atom-containing polymer alkylamine, aromatic amine, alkanolamine, and a nitrogen-containing heterocyclic compound
- an organic carboxylic acid a quaternary ammonium salt
- boron-containing compound in which the additive is one or
- the nonionic polymer is one or more kinds of polymers selected from the group consisting of polyethylene glycol, polypropylene glycol, polyoxyethylene polyoxypropylene glycol, and polyvinyl alcohol.
- the anionic polymer is one or more kinds of polymers selected from the group consisting of polyacrylic acid, polystyrene sulfonic acid, a phenolsulfonic acid formaldehyde condensate, an aryl phenolsulfonic acid formaldehyde condensate, and salts of these.
- the nitrogen atom-containing polymer is one or more kinds of polymers selected from the group consisting of polyvinylpyrrolidone, polyethyleneimine, polyallylamine, polyvinylamine, polyacrylamide, a dimethylamine.epihalohydrin-based polymer, a hexadimethrine salt, polydiallylamine, a polydimethyldiallylammonium salt, poly(4-vinylpyridine), polyornithine, polylysine, polyarginine, polyhistidine, polyvinylimidazole, and polymethyldiallylamine.
- the nonionic surfactant is one or more kinds of compounds selected from the group consisting of polyoxyethylene alkyl ether and polyoxyethylene alkyl allyl ether.
- the anionic surfactant is one or more kinds of compounds selected from the group consisting of alkyl benzenesulfonic acid, alkyl naphthalenesulfonic acid, alkyl diphenyl ether disulfonic acid, polyoxyethylene alkyl ether sulfonic acid, alkyl carboxylic acid, polyoxyethylene alkyl ether carboxylic acid, alkyl phosphonic acid, polyoxyethylene phosphonic acid, polyoxyethylene alkyl ether phosphoric acid, polyoxyethylene alkyl phenyl ether phosphoric acid, and salts of these.
- the alkyl benzenesulfonic acid is dodecyl benzenesulfonic acid.
- the alkyl naphthalenesulfonic acid is one or more kinds of compounds selected from the group consisting of propyl naphthalenesulfonic acid, triisopropyl naphthalenesulfonic acid, and dibutyl naphthalenesulfonic acid.
- the polyoxyethylene alkyl ether sulfonic acid is one or more kinds of compounds selected from the group consisting of polyoxyethylene lauryl ether sulfonic acid, polyoxyethylene oleyl ether sulfonic acid, and polyoxyethylene octyldodecyl ether sulfonic acid.
- the alkyl carboxylic acid is one or more kinds of compounds selected from the group consisting of dodecanoic acid, hexadecanoic acid, oleic acid, juniperic acid, stearic acid, 12-hydroxystearic acid, perfluorooctanoic acid, perfluoroheptanoic acid, and perfluorodccanoic acid.
- the polyoxyethylene alkyl ether carboxylic acid is one or more kinds of compounds selected from the group consisting of polyoxyethylene lauryl ether carboxylic acid, polyoxyethylene dodecyl ether carboxylic acid, and polyoxyethylene tridecyl ether carboxylic acid.
- the alkyl phosphonic acid is one or more kinds of compounds selected from the group consisting of bis(2-ethylhexyl)phosphate, dioctadecylphosphate, octadecylphosphate, dodecylphosphate, decyl phosphonic acid, dodecyl phosphonic acid, tetradecyl phosphonic acid, hexadecyl phosphonic acid, and octadecyl phosphonic acid.
- polyoxyethylene alkyl ether phosphoric acid is polyoxyethylene lauryl ether phosphoric acid.
- the cationic surfactant is one or more kinds of compounds among a hydroxide, a chloride, and a bromide of one or more kinds of compounds selected from the group consisting of cetyltrimethylammonium, stearyltrimethylammonium, laurylpyridinium, cetylpyridinium, 4-(4-diethylaminophenylazo)-1-(4-nitrobenzyl)pyridinium, benzalkonium, benzethonium, benzyldimethyldodecylammonium, benzyldimethylhexadecylammonium, hexadecyltrimethylammonium, dimethyldioctadecylammonium, dodecyltrimethylammonium, didodecyldimethylammonium, tetraheptylammonium, tetrakis(decyl)ammonium, and dimethyldihexadecylam
- amphoteric surfactant is one or more kinds of compounds selected from the group consisting of cocamidopropyl betaine, N,N-dimethyldodecylamine N-oxide, lauryl dimethylaminoacetic acid betaine, and lauryldimethylamine oxide.
- the alkylamine is one or more kinds of compounds selected from the group consisting of ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, tetramethylethylenediamine, hexamethylenediamine, methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, 2-ethylhexylamine, cyclohexylamine, phenethylamine, and m-xylylenediamine.
- the aromatic amine is one or more kinds of compounds selected from the group consisting of aniline and toluidine.
- the alkanolamine is one or more kinds of compounds selected from the group consisting of diethanolamine, diisopropanolamine, triisopropanolamine, 2-(2-aminoethylamino)ethanol, 2-(2-aminoethoxy)ethanol, triethanolamine, N-ethylethanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, cyclohexylamine diethanol, and N-methylethanolamine.
- the nitrogen-containing heterocyclic compound is one or more kinds of compounds selected from the group consisting of pyrrolidine, piperidine, piperazine, morpholine, pyrrole, pyrazole, imidazole, pyridine, pyrimidine, pyrazine, oxazole, thiazole, and 4-dimethylaminopyridine.
- the organic carboxylic acid is one or more kinds of compounds selected from the group consisting of citric acid, 2-methylpropane-1,2,3-tricarboxylic acid, benzene-1,2,3-tricarboxylic acid, propane-1,2,3-tricarboxylic acid, 1,cis-2,3-propanetricarboxylic acid, butane-1,2,3,4-tetracarboxylic acid, cyclopentane tetra-1,2,3,4-carboxylic acid, benzene-1,2,4,5-tetracarboxylic acid, benzenepentacarboxylic acid, benzenehexacarboxylic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, ethylenediaminetetraacetic acid, butylenediaminetetraacetic acid, tetraacetic acid, di
- organic carboxylic acid is an amino acid.
- amino acid is one or more kinds of amino acids selected from the group consisting of alanine, arginine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine.
- the quaternary ammonium salt is one or more kinds of compounds among a hydroxide, a chloride, and a bromide of one or more kinds of compounds selected from the group consisting of tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, methyltripropylammonium, methyltributylammonium, ethyltrimethylammonium, dimethyldiethylammonium, benzyltrimethylammonium, and (2-hydroxyethyl)trimethylammonium.
- the boron-containing compound is boric acid.
- the additive is one or more kinds of substances selected from the group consisting of polyethylene glycol, polyethyleneimine, dodecyl benzenesulfonic acid, a phenolsulfonic acid formaldehyde condensate, and dodecyl diphenyl ether disulfonic acid.
- the acetate solvent is one or more kinds of compounds selected from the group consisting of methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, t-butyl acetate, n-butyl acetate, isobutyl acetate, vinyl acetate, n-amyl acetate, isoamyl acetate, octyl acetate, 2-ethoxyethyl acetate, phenyl acetate, and phenethyl acetate.
- an element ratio of Si:Ge in the SiGe is in a range of 95:5 to 50:50.
- x represents a number of 1 to 3 and y represents a number of 1 or 2.
- a treatment liquid container having a container and the treatment liquid described in any one of [1] to [34] stored in the container,
- the container has a degassing mechanism that adjusts internal pressure of the container.
- the present invention it is possible to provide a treatment liquid that allows a treated portion to have excellent smoothness in a case where SiGe is etched with the treatment liquid.
- the present invention can also provide a treatment liquid container relating to the treatment liquid.
- FIG. 1 is a schematic cross-sectional view of the upper portion of a treatment liquid container to which a degassing cap is applied.
- FIG. 2 is a cross-sectional view showing an embodiment of an object to be treated.
- FIG. 3 is an example of a cross-sectional view showing an object to be treated having been treated by the present treatment method.
- ppm means “parts-per-million (10 ⁇ 6 )”
- ppb means “parts-per-billion (10 ⁇ 9 )”
- ppt means “parts-per-trillion (10 ⁇ 12 )”.
- room temperature is “25° C.”.
- the pH of the treatment liquid is a value measured at room temperature (25° C.) by using F-51 (trade name) manufactured by Horiba, Ltd.
- a molecular weight means a weight-average molecular weight.
- the weight-average molecular weight of a resin (polymer) is a polystyrene-equivalent weight-average molecular weight determined by gel permeation chromatography (GPC).
- the components of the treatment liquid mentioned in the present specification may be in a state of being ionized in the treatment liquid.
- examples of a salt of a compound containing a cationic nitrogen atom (N + ) or the like include a halide salt, such as fluoride, chloride, bromide, or iodide, of the compound, a hydroxide of the compound; a nitrate of the compound; a sulfate of the compound, and the like.
- a halide salt such as fluoride, chloride, bromide, or iodide
- these salts may form salts with two or more kinds of anions.
- the salt is an additive, it is also preferable that the aforementioned salt be other than a fluoride.
- Examples of a salt of a compound containing a sulfonic acid group, a phosphoric acid group, a carboxylic acid group, and the like include an alkali metal salt, such as a lithium salt, a sodium salt, or a potassium salt, of the compound; an alkaline earth metal salt, such as a calcium salt, of the compound; an ammonium salt of the compound, and the like. These salts may form salts with two or more kinds of cations.
- the treatment liquid according to an embodiment of the present invention contains a fluoride ion source, an oxidant, an acetate solvent, and an additive.
- the additive is an additive that does not contain a Si atom.
- the treatment liquid could not sufficiently improve the dissolution selectivity for SiGe.
- the reason is considered to be as below. That is, in a case where the additive containing a Si atom is used, because the additive containing a Si atom functions as an anticorrosive for the surface of SiGe in the presence of an acetate solvent, the additive may not improve the dissolution rate of SiGe, which may prevent the dissolution selectivity for silicon (Si) of SiGe from being sufficiently improved. Therefore, it is considered that using the additive containing no Si atom in the treatment liquid according to an embodiment of the present invention may have improved the dissolution selectivity for SiGe.
- the surface smoothness of the treated portion is improved.
- the inventors of the present invention consider that in creating a state where the acetate solvent and a SiGe dissolution product generated by partial dissolution in the middle of the treatment coexist, in a case where the aforementioned additive containing a Si atom is used, an interaction based on the Si atom may occur, and the additive may not be able to sufficiently bring about a surface smoothness improving effect. Therefore, it is considered that using the additive containing no Si atom in the treatment liquid according to an embodiment of the present invention may have improved the surface smoothness.
- the properties of exhibiting excellent selectivity in dissolving SiGe and/or the properties of allowing a treated portion to have excellent smoothness in a case where SiGe is etched with the treatment liquid will be also described as “the effect of the present invention is excellent”.
- the treatment liquid contains a fluoride ion source.
- the fluoride ion source is a component that releases fluoride ions (ions containing fluorine atoms, such as F ⁇ and/or HF 2 ⁇ ) in the treatment liquid.
- Fluoride ions are considered to be able to assist in the removal of oxides of silicon and/or germanium formed under the action of an oxidant that will be described later.
- fluoride ion source examples include hydrofluoric acid (HF), ammonium fluoride (NH 4 F), fluoroborate (such as KBF 4 or NH 4 BF 4 ), fluoroboric acid, tetrabutylammonium tetrafluoroborate, aluminum hexafluoride, sodium fluoride, potassium fluoride, AlF 2 , LiF 4 , CaF 3 , NaHF 6 , NH 4 HF 2 , KHF 2 , H 2 SiF 6 , and a compound represented by R 1 NR 2 R 3 R 4 F.
- hydrofluoric acid HF
- ammonium fluoride NH 4 F
- fluoroborate such as KBF 4 or NH 4 BF 4
- fluoroboric acid such as KBF 4 or NH 4 BF 4
- fluoroboric acid such as KBF 4 or NH 4 BF 4
- fluoroboric acid such as KBF 4 or NH 4 BF 4
- fluoroboric acid such as K
- R 1 NR 2 R 3 R 4 F each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- the total number of carbon atoms contained in R 1 , R 2 , R 3 , and R 4 is preferably 1 to 12.
- Examples of the compound represented by R 1 NR 2 R 3 R 4 F include tetraethylammonium fluoride, methyltriethylammonium fluoride, and tetrabutylammonium fluoride.
- the fluoride ion source is preferably hydrofluoric acid or ammonium fluoride.
- the content of the fluoride ion source is not particularly limited.
- the content of the fluoride ion source with respect to the total mass of the treatment liquid is preferably 0.001% to 10% by mass, more preferably 0.01% to 5% by mass, and even more preferably 0.1% to 3% by mass.
- One kind of fluoride ion source may be used alone, or two or more kinds of fluoride ion sources may be used. In a case where two or more kinds of fluoride ion sources are used, the total amount thereof is preferably within the above range.
- the treatment liquid contains an oxidant.
- the oxidant is considered to function to etch SiGe by acting on SiGe and forming an oxide (such as silicon oxide, germanium oxide, and/or silicon-germanium composite oxide).
- oxidant examples include a peroxide, a persulfide (for example, a monopersulfide or a dipersulfide), a percarbonate, salts of these, and acids of these.
- a peroxide compound containing one or more peroxy groups (—O—O—)
- the peroxide may be a peroxy acid (such as peracetic acid, perbenzoic acid, or salts of these).
- oxidants include an oxidative halide (such as iodic acid, periodic acid, or salts thereof), perboric acid, perborate, permanganate, a cerium compound, and a ferricyanide (such as potassium ferricyanide).
- oxidative halide such as iodic acid, periodic acid, or salts thereof
- perboric acid such as iodic acid, periodic acid, or salts thereof
- perborate such as perborate, permanganate
- cerium compound such as calcium oxide
- ferricyanide such as potassium ferricyanide
- oxidant examples include peracetic acid, hydrogen peroxide, periodic acid, potassium iodate, potassium permanganate, ammonium persulfate, ammonium molybdate, ferric nitrate, nitric acid, potassium nitrate, and a urea-hydrogen peroxide adduct.
- peracetic acid or hydrogen peroxide is preferable as the oxidant.
- the content of the oxidant is not particularly limited.
- the content of the oxidant with respect to the total mass of the treatment liquid is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 5% by mass or more.
- the upper limit of the content of the oxidant with respect to the total mass of the treatment liquid is preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 15% by mass or less, and particularly preferably less than 10% by mass.
- the treatment liquid contains an acetate solvent.
- the acetate solvent is, for example, a compound represented by “CH 3 —CO—O—R AC ”.
- R AC represents an organic group.
- the number of carbon atoms in the organic group is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 8.
- the organic group is preferably an alkyl group, an alkoxyalkyl group, an aryl group, an arylalkyl group, an alkenyl group, or a group consisting of a combination of these.
- the above alkyl group, an alkyl group moiety in the above alkoxyalkyl group, and an alkyl group moiety in the above arylalkyl group may be each independently linear or branched. A part of the entirety of each of the above alkyl group and the alkyl group moieties may form a cyclic structure. Each of the above alkyl group and the alkyl group moieties preferably has 1 to 8 carbon atoms.
- the above alkenyl group may be linear or branched, and a part or the entirety of the alkenyl group may form a cyclic structure.
- the alkenyl group preferably has 2 to 8 carbon atoms.
- the above aryl group and an aryl group moiety in the above arylalkyl group preferably each independently have 6 to 10 carbon atoms.
- the acetate solvent is preferably one or more kinds of compounds selected from the group consisting of methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, t-butyl acetate, n-butyl acetate, isobutyl acetate, vinyl acetate, n-amyl acetate, isoamyl acetate, octyl acetate, 2-ethoxyethyl acetate, phenyl acetate, and phenethyl acetate, more preferably one or more kinds of compounds selected from the group consisting of methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, t-butyl acetate, n-butyl acetate, isobutyl acetate, n-amyl acetate, isoamyl acetate, octy
- the content of the acetate solvent is not particularly limited.
- the content of the acetate solvent with respect to the total mass of the treatment liquid is preferably 1% to 70% by mass, more preferably 10% to 60% by mass, and even more preferably 20% to 45% by mass.
- One kind of acetate solvent may be used alone, or two or more kinds of acetate solvents may be used. In a case where two or more kinds of acetate solvents are used, the total amount thereof is preferably within the above range.
- the treatment liquid may contain an organic solvent other than the acetate solvent.
- the content of the organic solvent with respect to the content of the acetate solvent is preferably more than 0% by mass and 100% by mass or less, more preferably more than 0% by mass and 50% by mass or less, and even more preferably more than 0% by mass and 10% by mass or less.
- the treatment liquid contains an additive that does not contain a Si atom.
- the additive that does not contain a Si atom will be also called a specific additive.
- the fluoride ion source, oxidant, and acetate solvent described above are not included in the specific additive.
- the additive that does not contain a Si atom may be an additive that substantially does not contain a Si atom.
- the content of Si atoms with respect to the total mass of a compound as the additive may be 1% by mass or less, and is preferably 0.1% by mass or less.
- the lower limit of the content is 0% by mass or more.
- the content of the specific additive is not particularly limited.
- the content of the specific additive with respect to the total mass of the treatment liquid is preferably 0.001% to 10% by mass, more preferably 0.01% to 5% by mass, and even more preferably 0.1% to 3% by mass.
- One kind of specific additive may be used alone, or two or more kinds of specific additives may be used. In a case where two or more kinds of specific additives are used, the total amount thereof is preferably within the above range.
- the treatment liquid may further contain an additive containing a Si atom, in addition to the specific additive.
- the content of the additive containing a Si atom with respect to the total mass of the treatment liquid is preferably more than 0% by mass and less than 10% by mass, more preferably more than 0% by mass and less than 0.01% by mass, and even more preferably more than 0% by mass and less than 0.001% by mass.
- the content of the additive containing a Si atom with respect to the total mass of the specific additive is preferably more than 0% by mass and 100% by mass or less, more preferably more than 0% by mass and 10% by mass or less, and even more preferably more than 0% by mass and 1% by mass or less.
- the specific additive is preferably one or more kinds of substances selected from the group consisting of a nonionic polymer, an anionic polymer, a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nitrogen atom-containing polymer, alkylamine, aromatic amine, alkanolamine, and a nitrogen-containing heterocyclic compound, organic carboxylic acid, a quaternary ammonium salt, and a boron-containing compound, more preferably one or more kinds of substances selected from the group consisting of a nonionic polymer, an anionic polymer, a nonionic surfactant, an anionic surfactant, a cationic surfactant, a nitrogen atom-containing polymer, alkylamine, aromatic amine, alkanolamine, and a nitrogen-containing heterocyclic compound, an organic carboxylic acid other than an amino acid, cysteine, a quaternary ammonium salt, and a boron
- the nonionic polymer is a polymer that substantially does not contain ionic groups consisting of an anionic group and a cationic group.
- anionic group examples include groups represented by —COOM, —OSO 3 M, —P( ⁇ O)(OR 21 )OM, and —SO 3 M.
- M represents a hydrogen atom or a countercation.
- the countercation include an alkali metal ion (such as lithium, sodium, or potassium) and an ammonium ion.
- R 21 represents a hydrogen atom or a substituent (such as an alkyl group having 1 to 3 carbon atoms).
- Examples of the cationic group include a nitrogen atom-containing group.
- Examples of the nitrogen atom-containing group include an ammonium cation and a salt thereof.
- “Substantially does not contain ionic groups” means that the content of ionic groups with respect to the total mass of the polymer is 0% to 5% by mass.
- the content of ionic groups is preferably 0% to 1% by mass, and more preferably 0% to 0.1% by mass.
- the weight-average molecular weight of the nonionic polymer is preferably 400 to 50,000.
- the nonionic polymer is preferably other than the surfactants (the nonionic surfactant, the anionic surfactant, the cationic surfactant, and the amphoteric surfactant) that will be described later.
- the nonionic polymer is preferably one or more kinds of polymers selected from the group consisting of polyoxyalkylene glycol (such as polyethylene glycol, polypropylene glycol, or polyoxyethylene polyoxypropylene glycol) and polyvinyl alcohol.
- polyoxyalkylene glycol such as polyethylene glycol, polypropylene glycol, or polyoxyethylene polyoxypropylene glycol
- polyvinyl alcohol such as polyvinyl alcohol
- the alkylene group in the polyoxyalkylene glycol is preferably a linear or branched alkylene group having 1 to 5 carbon atoms.
- the content of the repeating unit represented by —CH 2 —CH(OH)— with respect to the total content of repeating units in the polymer is preferably 51 to 100 mol %, and more preferably 75 to 100 mol %.
- the anionic polymer is preferably other than the specific additive described above.
- the anionic polymer is a polymer containing a repeating unit containing an anionic group.
- anionic group examples include groups represented by —COOM, —OSO 3 M, —P( ⁇ O)(OR 21 )OM, and —SO 3 M.
- M represents a hydrogen atom or a countercation.
- the countercation include an alkali metal ion (such as lithium, sodium, or potassium) and an ammonium ion.
- R 21 represents a hydrogen atom or a substituent (such as an alkyl group having 1 to 3 carbon atoms or the aforementioned countercation).
- repeating unit containing an anionic group examples include (meth)acrylic acid, styrene sulfonic acid, a repeating unit formed by the condensation of phenolsulfonic acid and formaldehyde, a repeating unit formed by the condensation of aryl phenolsulfonic acid and formaldehyde, and a repeating unit in which each of the above repeating units forms a salt.
- Examples of the awl group in the awl phenolsulfonic acid include an aryl group having 6 to 14 carbon atoms.
- the anionic polymer also contains a repeating unit other than the repeating unit containing an anionic group
- the content of the repeating unit containing an anionic group with respect to the total content of repeating units in the polymer is preferably 51 to 100 mol %, and more preferably 75 to 100 mol %.
- the weight-average molecular weight of the anionic polymer is preferably 400 to 50,000.
- the anionic polymer is preferably other than the surfactants (the nonionic surfactant, the anionic surfactant, the cationic surfactant, and the amphoteric surfactant) that will be described later.
- the anionic polymer is preferably one or more kinds of polymers selected from the group consisting of polyacrylic acid, polystyrene sulfonic acid, a phenolsulfonic acid formaldehyde condensate and a salt thereof (such as a phenyl phenolsulfonic acid formaldehyde condensate), an awl phenolsulfonic acid formaldehyde condensate, and salts of these.
- the nitrogen atom-containing polymer is preferably other than the specific additive described above.
- the nitrogen atom-containing polymer is a polymer containing a repeating unit containing a nitrogen atom (N-containing repeating unit).
- the nitrogen atom-containing polymer also contains a repeating unit other than the N-containing repeating unit
- the content (molar ratio) of the N-containing repeating unit be the highest among all the repeating units.
- the content of the N-containing repeating unit with respect to the total content of repeating units in the polymer is preferably 51 to 100 mol %, and more preferably 75 to 100 mol %.
- the weight-average molecular weight of the nitrogen atom-containing polymer is preferably 400 to 50,000.
- the nitrogen atom-containing polymer is preferably other than the surfactants (the nonionic surfactant, the anionic surfactant, the cationic surfactant, and the amphoteric surfactant) that will be described later.
- Examples of monomers as sources of the N-containing repeating unit include vinylpyrrolidone, ethyleneimine, allylamine, vinylamine, acrylamide, hexadimethrine, diallylamine, a dimethyldiallylammonium salt (such as a halide salt, a hydroxide salt, a nitrate, or a sulfate), 4-vinylpyridine, ornithine, lysine, arginine, histidine, vinylimidazole, and methyldiallylamine
- a repeating unit consisting of dimethylamine and epichlorohydrin (preferably epichlorohydrin) may also be used.
- the nitrogen atom-containing polymer is preferably one or more kinds of polymers selected from the group consisting of polyvinylpyrrolidone, polyethyleneimine, polyallylamine, polyvinylamine, polyacrylamide, a dimethylamine.epihalohydrin-based polymer (preferably a dimethylamine-epihalohydrin copolymer, and more preferably a dimethylamine-epichlorohydrin copolymer), a hexadimethrine salt, polydiallylamine, a polydimethyldiallylammonium salt (such as a halide salt, a hydroxide salt, a nitrate, or a sulfate), poly(4-vinylpyridine), polyornithine, polylysine, polyarginine, polyhistidine, polyvinylimidazole, and polymethyldiallylamine.
- polyvinylpyrrolidone polyethyleneimine
- polyallylamine polyvinylamine
- the nonionic surfactant is preferably other than the specific additive described above.
- nonionic surfactant be different from the anionic surfactant, the cationic surfactant, and the amphoteric surfactant that will be described later.
- the nonionic surfactant is preferably a compound represented by “R NI -L NI -Q NI ”.
- R NI represents an alkyl group, an allyl group, an aryl group, or a group consisting of a combination of these. These groups may have one or more substituents.
- the alkyl group may be linear or branched.
- the number of carbon atoms in the alkyl group is preferably 6 or more, and more preferably 6 to 22.
- One or more of the ethylene groups in the alkyl group may be substituted with a vinylene group.
- the number of carbon atoms in the aforementioned aryl group is preferably 6 to 12.
- the number of carbon atoms in the allyl group is preferably 2 or more, and more preferably 2 to 22.
- L NI represents a single bond or a divalent linking group.
- the divalent linking group is preferably —O—, —CO—, —NR 11 —, —S—, —SO 2 —, —PO(OR 12 )—, an alkylene group, an arylene group, or a group obtained by combining these.
- R 11 represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group.
- R 12 represents an alkyl group, an aryl group, or an aralkyl group.
- Q NI represents a nonionic hydrophilic group.
- the nonionic hydrophilic group is preferably a polyoxyethylene unit (preferably having a polymerization degree of 5 to 150), a polyoxypropylene unit (preferably having a polymerization degree of 5 to 150), a polyoxyethylene-polypropylene unit (preferably having a polymerization degree of 5 to 150), a polyglycerin unit (preferably having a polymerization degree of 3 to 30), or a hydrophilic sugar chain unit (for example, a hydrophilic sugar chain unit such as glucose, arabinose, fructose, sorbitol, or mannose).
- the nonionic surfactant is preferably one or more kinds of compounds selected from the group consisting of polyoxyethylene alkyl ether and polyoxyethylene alkyl allyl ether.
- the anionic surfactant is preferably other than the specific additive described above.
- the anionic surfactant be different from the cationic surfactant and the amphoteric surfactant that will be described later.
- the anionic surfactant is preferably a compound represented by “R NA -L NA -Q NA ”.
- R NA represents an alkyl group, an aryl group, or a group consisting of a combination of these. These groups may have one or more substituents. Examples of the substituent include a halogen atom, such as a fluorine atom, and a hydroxyl group.
- the alkyl group may be linear or branched.
- the number of carbon atoms in the alkyl group is preferably 6 or more, and more preferably 6 to 22.
- the number of carbon atoms in the aforementioned aryl group is preferably 6 to 12.
- One or more of the ethylene groups in the alkyl group may be substituted with a vinylene group.
- L NA represents a single bond or a divalent linking group.
- the divalent linking group is preferably —O—, —CO—, —NR 11 —, —S—, —SO 2 —, —PO(OR 12 )—, an alkylene group, an arylene group, or a group obtained by combining these.
- R 11 represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group.
- R 12 represents an alkyl group, an aryl group, or an aralkyl group.
- the aforementioned alkylene group and the aforementioned arylene group may each independently have a substituent.
- each of the alkylene group and the arylene group may have one or more anionic groups as a substituent.
- L NA is preferably a polyoxyalkylene group (such as a polyoxyethylene group), a phenylene group, a biphenylene group, or a naphthylene group. These groups may have one or more substituents such as an anionic group described below.
- Q NA represents an anionic group.
- the anionic group include groups represented by —COOM, —OSO 3 M, —P( ⁇ O)(OR NA2 )OM, and —SO 3 M.
- M represents a hydrogen atom or a countercation.
- the countercation include an alkali metal ion (such as lithium, sodium, or potassium) and an ammonium ion.
- R NA2 represents an alkyl group having 1 to 3 carbon atoms, the aforementioned countercation, or a group represented by “R NA -L NA -”.
- R NA and L NA in the group represented by “R NA -L NA -” are as described above.
- the anionic surfactant is preferably one or more kinds of compounds selected from the group consisting of alkyl benzenesulfonic acid, alkyl naphthalenesulfonic acid, alkyl diphenyl ether disulfonic acid, polyoxyethylene alkyl ether sulfonic acid, alkyl carboxylic acid, polyoxyethylene alkyl ether carboxylic acid, alkyl phosphonic acid, polyoxyethylene phosphonic acid, polyoxyethylene alkyl ether phosphoric acid, polyoxyethylene alkyl phenyl ether phosphoric acid, and salts of these (such as a lithium salt, a sodium salt, a potassium salt, and an ammonium salt).
- the anionic surfactant contain at least any of the alkyl benzenesulfonic acid and a salt thereof, and that the alkyl benzenesulfonic acid be dodecyl benzenesulfonic acid.
- the anionic surfactant contain at least any of the alkyl naphthalenesulfonic acid and a salt thereof, and that the alkyl naphthalenesulfonic acid be one or more kinds of compounds selected from the group consisting of propyl naphthalenesulfonic acid, triisopropyl naphthalenesulfonic acid, and dibutyl naphthalenesulfonic acid.
- the anionic surfactant contain at least any of the alkyl diphenyl ether disulfonic acid and a salt thereof, and that the alkyl diphenyl ether disulfonic acid be dodecyl diphenyl ether disulfonic acid.
- the anionic surfactant contain at least any of the polyoxyethylene alkyl ether sulfonic acid and a salt thereof, and that the polyoxyethylene alkyl ether sulfonic acid be one or more kinds of compounds selected from the group consisting of polyoxyethylene lauryl ether sulfonic acid, polyoxyethylene oleyl ether sulfonic acid, and polyoxyethylene octyldodecyl ether sulfonic acid.
- the anionic surfactant contain at least any of the alkyl carboxylic acid and a salt thereof
- the alkyl carboxylic acid is preferably alkyl monocarboxylic acid containing an alkyl group having 6 or more carbon atoms (preferably having 6 to 22 carbon atoms) that may have a substituent.
- a halogen atom such as a fluorine atom, or a hydroxyl group is preferable.
- the alkyl carboxylic acid be a perfluoroalkyl carboxylic acid.
- the alkyl carboxylic acid is also preferably one or more kinds of compounds selected from the group consisting of dodecanoic acid, hexadecanoic acid, oleic acid, juniperic acid, stearic acid, 12-hydroxystearic acid, perfluorooctanoic acid, perfluoroheptanoic acid, and perfluorodecanoic acid.
- the anionic surfactant contain at least any of the polyoxyethylene alkyl ether carboxylic acid and a salt thereof, and that the polyoxyethylene alkyl ether carboxylic acid be one or more kinds of compounds selected from the group consisting of polyoxyethylene lauryl ether carboxylic acid, polyoxyethylene dodecyl ether carboxylic acid, and polyoxyethylene tridecyl ether carboxylic acid.
- the anionic surfactant contain at least any of the alkyl phosphonic acid and a salt thereof, and that the alkyl phosphonic acid be bis(2-ethylhexyl)phosphate, dioctadecylphosphate, octadecylphosphate, dodecylphosphate, decyl phosphonic acid, dodecyl phosphonic acid, tetradecyl phosphonic acid, hexadecyl phosphonic acid, and octadecyl phosphonic acid.
- the alkyl phosphonic acid be bis(2-ethylhexyl)phosphate, dioctadecylphosphate, octadecylphosphate, dodecylphosphate, decyl phosphonic acid, dodecyl phosphonic acid, tetradecyl phosphonic acid, hexadecyl phosphonic acid, and octadecyl
- the anionic surfactant contain at least any of the polyoxyethylene alkyl ether phosphoric acid and a salt thereof, and that the polyoxyethylene alkyl ether phosphoric acid be polyoxyethylene lauryl ether phosphoric acid.
- the cationic surfactant is preferably other than the specific additive described above, such as the nonionic surfactant and the anionic surfactant described above.
- the cationic surfactant be other than the amphoteric surfactant which will be described later.
- the cationic surfactant is preferably a non-polymeric compound having one or more (preferably one or two) cationic nitrogen atoms (N + ).
- the cationic nitrogen atom (N + ) may be contained in a pyridinium ring.
- the cationic surfactant containing only the cationic nitrogen atom (N + ) which is not contained in a pyridinium ring preferably has more than 16 carbon atoms, and more preferably has 17 to 50 carbon atoms.
- the cationic surfactant containing only the cationic nitrogen atom (N + ) which is not contained in a pyridinium ring preferably has 5 or more carbon atoms, more preferably has 5 to 50 carbon atoms, and even more preferably has 10 to 50 carbon atoms.
- the cationic nitrogen atom (N + ) form a salt together with a counteranion.
- the counteranion include OH ⁇ and halogen anions such as Cl + and Br ⁇ .
- the cationic surfactant is preferably a salt (for example, one or more kinds of compounds among a hydroxide, a chloride, and a bromide) of one or more kinds of compounds selected from the group consisting of cetyltrimethylammonium, stearyltrimethylammonium, laurylpyridinium, cetylpyridinium, 4-(4-diethylaminophenylazo)-1-(4-nitrobenzyl)pyridinium, benzalkonium, benzethonium, benzyldimethyldodecylammonium, benzyldimethylhexadecylammonium, hexadecyltrimethylammonium, dimethyldioctadecylammonium, dodecyltrimethylammonium, didodecyldimethylammonium, tetraheptylammonium, tetrakis(decyl)ammonium, and dimethyl
- amphoteric surfactant is preferably other than the specific additive described above, such as the nonionic surfactant, the anionic surfactant, and the cationic surfactant described above.
- amphoteric surfactant examples include a betaine-type amphoteric surfactant such as alkylbetaine or fatty acid amide propyl betaine, and an amine oxide-type amphoteric surfactant.
- amphoteric surfactant is preferably one or more kinds of compounds selected from the group consisting of cocamidopropyl betaine, N,N-dimethyldodecylamine N-oxide, lauryl dimethylaminoacetic acid betaine, and lauryldimethylamine oxide.
- the alkylamine be none of the aforementioned specific additive, the nitrogen-containing heterocyclic compound that will be described later, the alkanolamine that will be described later, and the amino acid that will be described later.
- the alkylamine is a compound containing at least one partial structure represented by “alkyl group-N”.
- the alkyl group may have a substituent.
- the molecular weight of the alkylamine is preferably 15 or more and less than 400, and more preferably 15 or more and 300 or less.
- the alkylamine is preferably a compound represented by “R N 2 N(-L N -NR LN -) XN R N ”.
- XN represents an integer of 0 to 6.
- R N 's and XN pieces of R LN 's each independently represent a hydrogen atom or an alkyl group which may have a substituent.
- the alkyl group in the aforementioned alkyl group which may have a substituent may be linear or branched, or the entirety or a part of the alkyl group may form a cyclic structure.
- the number of carbon atoms in the alkyl group is preferably 1 to 120.
- the substituent in the aforementioned alkyl group which may have a substituent is preferably an aryl group (preferably having 6 to 15 carbon atoms), an aminoalkyl group (preferably having 1 to 5 carbon atoms), or a group consisting of a combination of these. It is also preferable that the substituent be other than a hydroxyl group and a carboxy group.
- the total number of carbon atoms of the aforementioned alkyl group which may have a substituent is preferably 1 to 20.
- XN pieces of L N 's each independently represent an alkylene group having 1 to 8 carbon atoms.
- R N 's is the aforementioned alkyl group which may have a substituent.
- the alkylamine is preferably one or more kinds of compounds selected from the group consisting of ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, tetramethylethylenediamine, hexamethylenediamine, methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, 2-ethylhexylamine, cyclohexylamine, phenethylamine, and m-xylylenediamine.
- the aromatic amine is preferably other than the specific additive described above.
- the aromatic amine is a compound containing at least one partial structure represented by “aromatic ring group-N”.
- the aromatic ring group may have a substituent.
- the aromatic amine be none of the aforementioned specific additive, the nitrogen-containing heterocyclic compound that will be described later, and the amino acid other than cysteine that will be described later.
- the molecular weight of the aromatic amine is preferably 15 or more and less than 400, and more preferably 15 or more and 300 or less.
- the aromatic amine is preferably a compound represented by “R N 2 N-aromatic ring group which may have a substituent”.
- R N 2 N-aromatic ring group which may have a substituent
- two R N 's each independently represent a hydrogen atom or a substituent other than an alkyl group.
- the substituent in the aforementioned aromatic ring group which may have a substituent is preferably an alkyl group (preferably having 1 to 20 carbon atoms), an aryl group (preferably having 6 to 15 carbon atoms), an aminoalkyl group (preferably having 1 to 5 carbon atoms), or a group obtained by combining these.
- the total number of carbon atoms of the aforementioned aromatic ring group which may have a substituent is preferably 1 to 20.
- the aromatic ring group in the aromatic ring group which may have a substituent preferably has 5 to 15 carbon atoms, and may contain a heteroatom as a ring member atom.
- the aromatic amine is preferably one or more kinds of compounds selected from the group consisting of aniline and toluidine.
- the alkanolamine is preferably other than the specific additive described above.
- the alkanolamine is a compound having an alkane skeleton containing a hydroxy group and an amino group.
- the alkanolamine is preferably a compound in which at least one alkyl group which may have a substituent that is in the aforementioned “R N 2 N(-L N -NR LN —) XN R N ” is an alkyl group having a hydroxyl group as a substituent.
- the alkanolamine is preferably one or more kinds of compounds selected from the group consisting of diethanolamine, diisopropanolamine, triisopropanolamine, 2-(2-aminoethylamino)ethanol, 2-(2-aminoethoxy)ethanol, triethanolamine, N-ethylethanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, cyclohexylamine diethanol, and N-methylethanolamine
- the nitrogen-containing heterocyclic compound is preferably other than the specific additive described above.
- the nitrogen-containing heterocyclic compound is a compound having a heterocyclic structure having at least one (preferably one to four) nitrogen atom as a ring member atom.
- the nitrogen atom as a ring member atom of the heterocyclic structure be other than the cationic nitrogen atom (N + ).
- the heterocyclic structure may have a heteroatom (such as an oxygen atom or a sulfur atom) as a ring member atom, in addition to the nitrogen atom.
- a heteroatom such as an oxygen atom or a sulfur atom
- the heterocyclic structure may be monocyclic or polycyclic. In a case where the heterocyclic structure is monocyclic, a 5- to 8-membered ring is preferable. In a case where the heterocyclic structure is polycyclic, the total number of rings is preferably 2 to 5, and it is also preferable that each ring be a 5- to 8-membered ring.
- the heterocyclic structure may or may not have aromaticity.
- rings having aromaticity may be fused together, rings having no aromaticity may be fused together, or a ring having aromaticity and a ring having no aromaticity may be fused together.
- the number of ring member atoms constituting the heterocyclic structure is preferably 3 to 20.
- the heterocyclic structure may contain a substituent (such as primary to tertiary amino groups).
- the nitrogen-containing heterocyclic compound may have only one heterocyclic structure described above or may have a plurality of heterocyclic structures described above.
- the molecular weight of the nitrogen-containing heterocyclic compound is preferably 40 or more and less than 400, and more preferably 50 or more and 300 or less.
- the nitrogen-containing heterocyclic compound is preferably one or more kinds of compounds selected from the group consisting of pyrrolidine, piperidine, piperazine, morpholine, pyrrole, pyrazole, imidazole, pyridine, pyrimidine, pyrazine, oxazole, thiazole, and 4-dimethylaminopyridine.
- the organic carboxylic acid is preferably other than the specific additive (such as the anionic polymer and the anionic surfactant) described above.
- organic carboxylic acid examples include a polycarboxylic acid (preferably a polycarboxylic acids other than an amino acid), a hydroxy acid, and an amino acid.
- the organic carboxylic acid be other than an alkyl monocarboxylic acid containing an alkyl group having 6 or more carbon atoms which may have a substituent.
- the molecular weight of the organic carboxylic acid is preferably 40 or more and less than 400.
- the organic carboxylic acid is preferably one or more kinds of compounds selected from the group consisting of citric acid, 2-methylpropane-1,2,3-tricarboxylic acid, benzene-1,2,3-tricarboxylic acid (hemimellitic acid), propane-1,2,3-tricarboxylic acid (tricarballylic acid), 1,cis-2,3-propanetricarboxylic acid (aconitic acid), butane-1,2,3,4-tetracarboxylic acid, cyclopentane tetra-1,2,3,4-carboxylic acid, benzene-1,2,4,5-tetracarboxylic acid (pyromellitic acid), benzenepentacarboxylic acid, benzenehexacarboxylic acid (mellitic acid), oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, ethylene
- the organic carboxylic acid which is an amino acid is preferably a compound containing a carboxy group and a primary or secondary amino group.
- the organic carboxylic acid which is an amino acid is preferably one or more kinds of amino acids selected from the group consisting of alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine.
- the quaternary ammonium salt is preferably other than the specific additive described above.
- the quaternary ammonium salt preferably has 16 or less carbon atoms, and more preferably 4 to 16 carbon atoms.
- the quaternary ammonium salt does not include a pyridinium salt.
- the quaternary ammonium salt is, for example, a compound represented by “R T 4 N + .T ⁇ ”.
- R T 4 N + .T ⁇ four R T 's each independently represent an organic group having a carbon atom as an atom directly bonded to N + .
- the organic group is preferably an alkyl group which may have a substituent or an aryl group which may have a substituent.
- the alkyl group in the aforementioned alkyl group which may have a substituent may be linear or branched, or the entirety or a part of the alkyl group may form a cyclic structure.
- the number of carbon atoms in the alkyl group is preferably 1 to 110.
- the substituent in the aforementioned alkyl group which may have a substituent is preferably a hydroxyl group or an aryl group (preferably having 6 to 10 carbon atoms).
- the aryl group in the aforementioned aryl group which may have a substituent preferably has 6 to 12 carbon atoms.
- the substituent in the aforementioned aryl group which may have a substituent is preferably a hydroxyl group or an alkyl group (preferably having 1 to 10 carbon atoms).
- T ⁇ represents a counteranion.
- the counteranion is preferably OH ⁇ .
- the total number of carbon atoms contained in the compound represented by “R T 4 N + .T ⁇ ” is preferably 16 or less, and more preferably 4 to 16.
- the quaternary ammonium salt is preferably a salt (for example, one or more kinds of compounds among a hydroxide, a chloride, and a bromide) of one or more kinds of compounds selected from the group consisting of tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, methyltripropylammonium, methyltributylammonium, ethyltrimethylammonium, dimethyldiethylammonium, benzyltrimethylammonium, and (2-hydroxyethyl)trimethylammonium.
- a salt for example, one or more kinds of compounds among a hydroxide, a chloride, and a bromide
- the boron-containing compound is preferably other than the specific additive described above.
- the boron-containing compound is a compound containing a boron atom (B).
- the boron atom-containing compound is preferably a compound having “—OH” directly bonded to a boron atom.
- the molecular weight of the boron-containing compound is preferably 50 or more and less than 400, and more preferably 60 or more and 300 or less.
- the boron-containing compound is preferably boric acid.
- the treatment liquid contain water.
- the water is not particularly limited, and examples thereof include distilled water, deionized water, and pure water.
- the content of water in the treatment liquid is not particularly limited.
- the content of water with respect to the total mass of the treatment liquid is preferably 20% by mass or more, more preferably 30% by mass or more, and even more preferably 55% by mass or more.
- the upper limit of the content of water is less than 100% by mass, preferably 90% by mass or less, and more preferably 80% by mass or less.
- the method for manufacturing the treatment liquid is not particularly limited, and known manufacturing methods can be used.
- Examples of the manufacturing method include a method of mixing together predetermined amounts of water, fluoride ion source, oxidant, acetal solvent, specific additive, and the like. In mixing the above components, as necessary, other optional components may be mixed together.
- the treatment liquid may be purified by being filtered using a filter.
- the pH of the treatment liquid is, for example, preferably less than 7, and more preferably less than 4.
- the lower limit of the pH is, for example, ⁇ 2 or more.
- the treatment liquid may contain a pH adjuster.
- the pH adjuster include an acid compound (such as an inorganic or organic acid) other than the aforementioned components, and a basic compound (such as an inorganic or organic base).
- the treatment liquid may be stored in a container and kept as it is until use.
- the container and the treatment liquid stored in the container are collectively called treatment liquid container.
- the stored treatment liquid is used after being taken out of the treatment liquid container. It is also preferable that the treatment liquid be transported as a treatment liquid container and provided from the manufacturer to the user, from the storage place to the place of use, or the like.
- the container have a degassing mechanism for adjusting the pressure (internal pressure) in the container.
- the degassing mechanism is, for example, a mechanism which releases the generated gas from the inside of the container to the outside in a case where gas is generated from the treatment liquid by the increase in temperature of the treatment liquid in the container during storage of the treatment liquid container and/or by the decomposition of some components of the treatment liquid and the like, so that the internal pressure is kept within a certain range without excessively increasing.
- Examples of the degassing mechanism include a check valve.
- a degassing cap comprising a degassing mechanism, so that the container includes a degassing mechanism.
- the container of the treatment liquid container have a degassing cap comprising a degassing mechanism that adjusts the internal pressure of the container.
- the treatment liquid be provided from the manufacturer to the user, from the storage place to the place of use, and the like by a method using such a treatment liquid container.
- Examples of the degassing cap include a cap provided with a valve (preferably a check valve) that releases the internal gas of the container to the outside in a case where pressure (internal pressure) over a certain level is applied to the cap.
- a valve preferably a check valve
- FIG. 1 is a schematic cross-sectional view of the upper portion of a treatment liquid container to which the degassing cap is applied.
- a treatment liquid container 100 has a container consisting of a cap (degassing cap) composed of a cap body 102 , a waterproof breathable film 104 , and a breathable layer 106 and a container body 108 sealed with the cap.
- the treatment liquid container 100 also has a treatment liquid 110 stored in the container body 108 .
- the dashed arrow is a virtual flow passage 112 of the gas generated from the treatment liquid 110 .
- the gas generated from the treatment liquid 110 passes through the waterproof breathable film 104 , and then is released to the outside of the container through the breathable layer 106 and the gap between the cap body 102 and the container body 108 . In this way, the internal pressure is restrained from excessively increasing by the gas generated from the treatment liquid.
- the waterproof breathable film 104 is a highly gas-permeable film that is permeable to a gas but is impermeable to a liquid.
- the breathable layer 106 is a layer provided to allow the gas having passed through the waterproof breathable film 104 to rapidly move to the outside.
- the breathable layer 106 is formed, for example, of a porous material (such as polyethylene foam).
- the breathable layer 106 may not be provided.
- a structure for fixing the cap in a state where the cap is put on the body of the container for example, a structure that allows the cap body 102 to be screwed on and fixed to the container body 108 ) be formed between the cap body 102 and the container body 108 , although this structure is not shown in the drawing.
- This structure is preferably a structure that does not hinder the release of the gas to the outside.
- a container for semiconductors which has a high internal cleanliness and is unlikely to cause elution of impurities.
- Examples of usable containers include a “CLEAN BOTTLE” series manufactured by AICELLO CORPORATION, and “PURE BOTTLE” manufactured by KODAMA PLASTICS Co., Ltd.
- the inner wall of the container (particularly, the container body) be formed of one or more kinds of resins selected from the group consisting of a polyethylene resin, a polypropylene resin, and a polyethylene-polypropylene resin, or formed of a resin different from these. It is also preferable that the inner wall of the container (particularly, the container body) be formed of a metal having undergone a rustproofing treatment or a metal elution preventing treatment, such as stainless steel, Hastelloy, Inconel, or Monel.
- a fluororesin (perfluororesin) is preferable.
- a container having inner wall made of a fluororesin the occurrence of problems such as elution of an ethylene or propylene oligomer can be further suppressed, than in a case where a container having inner wall formed of a polyethylene resin, a polypropylene resin, or a polyethylene-polypropylene resin is used.
- Examples of the container having inner wall made of a fluororesin include a FluoroPure PFA composite drum manufactured by Entegris, and the like.
- quartz and an electropolished metallic material are also preferably used for the inner wall of the container (particularly, the container body).
- the electropolished metallic material it is preferable to use a metallic material which contains at least one kind of metal selected from the group consisting of chromium and nickel, and in which the total content of chromium and nickel is more than 25% by mass with respect to the total mass of the metallic material.
- a metallic material include stainless steel and a nickel-chromium alloy.
- the total content of chromium and nickel in the metallic material is preferably 30% by mass or more with respect to the total mass of the metallic material.
- the upper limit of the total content of chromium and nickel in the metallic material is not particularly limited, but is preferably 90% by mass or less with respect to the total mass of the metallic material.
- the stainless steel is not particularly limited, and known stainless steel can be used. Particularly, an alloy with a nickel content of 8% by mass or more is preferable, and austenite-based stainless steel with a nickel content of 8% by mass or more is more preferable.
- austenite-based stainless steel examples include Steel Use Stainless (SUS) 304 (Ni content: 8% by mass, Cr content: 18% by mass), SUS304L (Ni content: 9% by mass, Cr content: 18% by mass), SUS316 (Ni content: 10% by mass, Cr content: 16% by mass), and SUS316L (Ni content: 12% by mass, Cr content: 16% by mass).
- SUS Steel Use Stainless
- the nickel-chromium alloy is not particularly limited, and known nickel-chromium alloys can be used. Among these, a nickel-chromium alloy is preferable in which the nickel content is 40% to 75% by mass and the chromium content is 1% to 30% by mass.
- Examples of the nickel-chromium alloy include HASTELLOY (trade name, the same is true of the following description), MONEL (trade name, the same is true of the following description), and INCONEL (trade name, the same is true of the following description). More specifically, examples thereof include HASTELLOY C-276 (Ni content: 63% by mass, Cr content: 16% by mass), HASTELLOY C (Ni content: 60% by mass, Cr content: 17% by mass), and HASTELLOY C-22 (Ni content: 61% by mass, Cr content: 22% by mass).
- the nickel-chromium alloy may further contain boron, silicon, tungsten, molybdenum, copper, or cobalt, in addition to the aforementioned alloy.
- the method of electropolishing the metallic material is not particularly limited, and known methods can be used. For example, it is possible to use the methods described in paragraphs “0011” to “0014” in JP2015-227501A, paragraphs “0036” to “0042” in JP2008-264929A, and the like.
- the metallic material have undergone buffing.
- buffing method known methods can be used without particular limitation.
- the size of abrasive grains used for finishing the buffing is not particularly limited, but is preferably #400 or less because such grains make it easy to further reduce the surface asperity of the metallic material.
- the buffing is preferably performed before the electropolishing.
- one of the multistage buffing carried out by changing the size of abrasive grains, acid pickling, magnetorheological finishing, and the like or a combination of two or more treatments selected from the above may be performed on the metallic material.
- these containers (such as the container body and the cap) be washed before the containers are filled with the treatment liquid.
- a liquid with a lower metal impurity content it is preferable to use a liquid with a lower metal impurity content.
- the treatment liquid may be bottled using a container, such as a gallon bottle or a quart bottle, and transported or stored.
- the inside of the container may be purged with an inert gas (such as nitrogen or argon) having a purity of 99.99995% by volume or higher. Particularly, a gas with a low moisture content is preferable.
- an inert gas such as nitrogen or argon
- the temperature may be controlled in a range of ⁇ 20° C. to 20° C.
- the treatment liquid may be prepared as a kit composed of a plurality of separated raw materials of the treatment liquid.
- the treatment liquid may be prepared as a concentrated solution.
- the concentration factor is appropriately determined depending on the composition, but is preferably 5 ⁇ to 2,000 ⁇ . That is, the concentrated solution is used after being diluted 5 ⁇ to 2,000 ⁇ .
- the treatment liquid according to the embodiment of the present invention is preferably applied to a method for treating an object to be treated containing SiGe (hereinafter, the method will be also simply called “the present treatment method”).
- SiGe is a material consisting of a combination of silicon (Si) and germanium (Ge), and is preferably used as a semiconductor material.
- SiGe may intentionally or inevitably contain components other than silicon and germanium.
- the total content of silicon and germanium with respect to the total mass of SiGe is preferably 95% to 100% by mass, more preferably 99% to 100% by mass, and even more preferably 99.9% to 100% by mass.
- the element ratio of silicon (Si):germanium (Ge) (ratio between atom % of Si atoms in SiGe and atom % of Ge atoms in SiGe, Si:Ge) is preferably 99:1 to 30:70, more preferably 95:5 to 50:50, and even more preferably 85:15 to 65:35.
- the form of the object to be treated is not particularly limited as long as the object to be treated contains SiGe.
- Examples thereof include an object 200 to be treated shown in FIG. 2 containing a substrate 202 and SiGe 204 and other materials 206 that are alternately laminated on the substrate 202 .
- FIG. 2 shows an aspect in which the object 200 to be treated contains a plurality of SiGe 204 and a plurality of other materials 206 .
- the substrate 202 shown in FIG. 2 has a site where none of the SiGe 204 and other materials 206 exist. However, such a site may be covered with the SiGe 204 .
- the SiGe 204 is disposed directly on the substrate 202 . However, the SiGe 204 may be disposed via another layer.
- the other materials 206 may be other than SiGe. Furthermore, the plurality of other materials 206 may be different layers. Particularly, it is preferable that the object 200 to be treated have at least a piece of other materials 206 which is silicon (Si).
- the type of substrate contained in the object to be treated is not particularly limited.
- the substrate include various substrates such as a semiconductor wafer, a glass substrate for a photomask, a glass substrate for liquid crystal display, a glass substrate for plasma display, a substrate for field emission display (FED), a substrate for an optical disk, a substrate for a magnetic disk, and a substrate for a magneto-optical disk.
- various substrates such as a semiconductor wafer, a glass substrate for a photomask, a glass substrate for liquid crystal display, a glass substrate for plasma display, a substrate for field emission display (FED), a substrate for an optical disk, a substrate for a magnetic disk, and a substrate for a magneto-optical disk.
- FED field emission display
- Examples of materials constituting the semiconductor substrate include silicon, a Group III-V compound such as GaAs, and any combination of these.
- the substrate be consist of silicon (Si).
- the size, thickness, shape, layer structure, and the like of the substrate are not particularly limited, and can be appropriately selected as desired.
- the object to be treated may contain a metal hard mask.
- the object 200 to be treated shown in FIG. 2 may further contain a metal hard mask.
- the metal hard mask examples include a metal hard mask containing one or more kinds of substances among Cu, Co, W, AlO x , AlN, AlO x N y , WO x , Ti, TiN, ZrO x , HfO x , and TaO x (x represents a number of 1 to 3, and y represents a number of 1 or 2).
- the metal hard mask contain one or more kinds of substances among Cu, Co, W, AlO x , AlN, AlO x N y , WO x , Ti, TiN, ZrO x , HfO x , and TaO x .
- the content of one or more kinds of such substances with respect to the total mass of the metal hard mask is preferably 30% to 100% by mass, more preferably 60% to 100% by mass, and even more preferably 95% to 100% by mass.
- SiGe and/or other materials that the object to be treated contains are not particularly limited.
- these materials may be in the form of a film, wiring line, or particles.
- the thickness thereof is not particularly limited and may be appropriately selected depending on the use.
- the thickness is 1 to 50 nm.
- SiGe and/or other materials may be disposed only on one of the main surfaces of the substrate, or may be disposed on both the main surfaces of the substrate. Furthermore, SiGe and/or other materials may-be disposed on the entire main surface of the substrate, or may be disposed on a portion of the main surface of the substrate.
- the object to be treated may contain various layers and/or structures as desired, in addition to SiGe and/or other materials.
- the substrate may have a metal wire, a gate electrode, a source electrode, a drain electrode, an insulating layer, a ferromagnetic layer, and/or a non-magnetic layer, and the like.
- the substrate may include the structure of an exposed integrated circuit, for example, an interconnection mechanism such as a metal wire and a dielectric material.
- an interconnection mechanism such as a metal wire and a dielectric material.
- metals and alloys used for the interconnection mechanism include aluminum, a copper-aluminum alloy, copper, titanium, tantalum, cobalt, silicon, titanium nitride, tantalum nitride, and tungsten.
- the substrate may include a layer of silicon oxide, silicon nitride, silicon carbide, and/or carbon-doped silicon oxide.
- the method for manufacturing the object to be treated is not particularly limited.
- the object to be treated shown in FIG. 2 may be manufactured by a method of forming an insulating film on a substrate, disposing SiGe and the like on the insulating film by a sputtering method, a chemical vapor deposition (CVD) method, a molecular beam epitaxy (MBE) method, or the like, and then performing a smoothing treatment such as CMP.
- CVD chemical vapor deposition
- MBE molecular beam epitaxy
- Examples of the method for treating an object to be treated according to an embodiment of the present invention include a method of bringing an object to be treated containing at least SiGe into contact with the treatment liquid described above so that SiGe is dissolved.
- the method of bringing the object to be treated into contact with the treatment liquid is not particularly limited, and examples thereof include a method of immersing the object to be treated in the treatment liquid stored in a tank, a method of spraying the treatment liquid onto the object to be treated, a method of causing the treatment liquid to flow on the object to be treated, and a combined method consisting of any of the above methods.
- the method of immersing the object to be treated in the treatment liquid is preferable.
- a mechanical stirring method may also be used.
- Examples of the mechanical stirring method include a method of circulating the treatment liquid on an object to be treated, a method of causing the treatment liquid to flow on the object to be treated or spraying the treatment liquid onto the object to be treated, and a method of stirring the treatment liquid by using ultrasonic or megasonic waves.
- the contact time between the object to be treated and the treatment liquid can be adjusted as appropriate.
- the treatment time (the contact time between the treatment liquid and the object to be treated) is not particularly limited, but is preferably 0.25 to 20 minutes, and more preferably 0.5 to 15 minutes.
- the temperature of the treatment liquid during the treatment is not particularly limited, but is preferably 20° C. to 75° C. and more preferably 20° C. to 60° C.
- the dissolution rate of SiGe is, for example, preferably 10 ⁇ /min or more, more preferably 40 to 300 ⁇ /min, even more preferably 50 to 200 ⁇ /min, and particularly preferably 70 to 150 ⁇ /min.
- the object to be treated contains other materials (for example, silicon) in addition to SiGe
- the other materials may or may not be dissolved together with SiGe by the present treatment.
- the dissolution of the other materials may be intentional or inevitable.
- the amount of the inevitably dissolved other materials be small.
- a substance that inevitably dissolves a material in a small amount even though the dissolution is not intended is also described as a substance to which the material has excellent resistance as a member.
- the treatment liquid is preferably a substance to which silicon as has excellent resistance as a member.
- the dissolution rate of silicon is preferably less than 10 ⁇ /min, more preferably 0.01 to 5 ⁇ /min, even more preferably 0.01 to 1 ⁇ /min, and particularly preferably 0.01 to 0.5 ⁇ /min.
- SiGe contained in the object to be treated may be partially or totally dissolved.
- the object 200 to be treated shown in FIG. 3 is a form of the object 200 to be treated shown in FIG. 2 that has been treated by the present treatment method.
- other materials 206 are materials (such as silicon) that are not intended to dissolve, SiGe 204 is partially dissolved from lateral surfaces thereof and forms recess portions.
- the other materials 206 are materials that are not intended to be dissolved, and SiGe 204 is to be totally dissolved by the present treatment method, it is also preferable that the other materials 206 be supported by other materials which are not shown in the drawing.
- the present treatment method may include a rinsing step of performing a rinsing treatment on the object to be treated by using a rinsing liquid.
- a rinsing step may be additionally performed after the object to be treated is brought into contact with the treatment liquid.
- rinsing liquid for example, water, hydrofluoric acid (preferably 0.001% to 1% by mass hydrofluoric acid), hydrochloric acid (preferably 0.001% to 1% by mass hydrochloric acid), hydrogen peroxide water (preferably 0.5% to 31% by mass hydrogen peroxide water, and more preferably 3% to 15% by mass hydrogen peroxide water), a mixed solution of hydrofluoric acid and hydrogen peroxide water (FPM), a mixed solution of sulfuric acid and hydrogen peroxide water (SPM), a mixed solution of aqueous ammonia and hydrogen peroxide water (APM), a mixed solution of hydrochloric acid and hydrogen peroxide water (HPM), aqueous carbon dioxide (preferably 10 to 60 ppm by mass aqueous carbon dioxide), aqueous ozone (preferably 10 to 60 ppm by mass aqueous ozone), aqueous hydrogen (preferably 10 to 20 ppm by mass aqueous hydrogen), an aqueous citric acid solution (preferably a aque
- the preferred compositional ratio described above means a compositional ratio determined in a case where the content of aqueous ammonia is 28% by mass, the content of hydrofluoric acid is 49% by mass, the content of sulfuric acid is 98% by mass, the content of hydrochloric acid is 37% by mass, and the content of hydrogen peroxide water is 30% by mass.
- volume ratio is based on a volume at room temperature.
- the hydrofluoric acid, nitric acid, perchloric acid, and hydrochloric acid mean aqueous solutions obtained by dissolving HF, HNO 3 , HClO 4 , and HCl in water respectively.
- aqueous ozone, aqueous carbon dioxide, and aqueous hydrogen mean aqueous solutions obtained by dissolving O 3 , CO 2 , and H 2 in water respectively.
- these rinsing liquids may be used by being mixed together.
- the rinsing liquid may also contain an organic solvent.
- Examples of the specific method of the rinsing step include a method of bringing the rinsing liquid into contact with the object to be treated.
- the method of bringing the rinsing liquid into contact with the object to be treated is performed by a method of immersing the substrate in the rinsing liquid stored in a tank, a method of spraying the rinsing liquid onto the substrate, a method of causing the rinsing liquid to flow on the substrate, or a combined method consisting of any of the above methods.
- the treatment time is not particularly limited, but is 5 seconds to 5 minutes for example.
- the temperature of the rinsing liquid during the treatment is not particularly limited. Generally, the temperature of the rinsing liquid is, for example, preferably 16° C. to 60° C., and more preferably 18° C. to 40° C. In a case where SPM is used as the rinsing liquid, the temperature thereof is preferably 90° C. to 250° C.
- the present treatment method may include a drying step of performing a drying treatment after the rinsing step.
- the method of the drying treatment is not particularly limited, and examples thereof include spin drying, causing a drying gas to flow on the substrate, heating the substrate by a heating unit such as a hot plate or an infrared lamp, isopropyl alcohol (IPA) vapor drying, Marangoni drying, Rotagoni drying, and any combination of these.
- IPA isopropyl alcohol
- the drying time varies with the specific method to be used, but is about 30 seconds to a few minutes in general.
- the present treatment method may be used for washing an object to be treated.
- the treatment liquid may be used for washing for removing dry etching residues on the substrate.
- the dry etching residues may or may not contain SiGe.
- the object to be treated may or may not contain SiGe in a form other than the dry etching residues.
- washing treatment method of applying the treatment liquid to an object to be treated for washing described above examples include a method of bringing the object to be treated into contact with the treatment liquid.
- the washing treatment method may be the same as the method of bringing an object to be treated into contact with the treatment liquid that is described above regarding the aforementioned method of dissolving SiGe.
- either or both of the rinsing step and the drying treatment may be performed which are described above regarding the aforementioned method of dissolving SiGe.
- washing treatment may be performed simultaneously with the aforementioned method of dissolving SiGe.
- the treatment method using the treatment liquid may be performed in combination with a semiconductor device manufacturing method, before or after the steps performed in the manufacturing method. While being performed, the present treatment method may be incorporated into those other steps. Alternatively, while those other steps are being performed, the present treatment method may be incorporated into the steps and performed.
- Examples of those other steps include a step of forming each structure such as a metal wire, a gate structure, a source structure, a drain structure, an insulating layer, a ferromagnetic layer and/or a non-magnetic layer (layer formation, etching, chemical mechanical polishing, modification, and the like), a step of forming resist, an exposure step and a removing step, a heat treatment step, a washing step, an inspection step, and the like.
- the present treatment method may be performed in the back end process (BEOL: back end of the line) or in the front end process (FEOL: front end of the line).
- the treatment liquid may be applied, for example, to NAND, dynamic random access memory (DRAM), static random access memory (SRAM), resistive random access memory (ReRAM), ferroelectric random access memory (FRAM (registered trademark)), magnetoresistive random access memory (MRAM), phase change random access memory (PRAM), or the like, or applied to a logic circuit, a processor, or the like.
- DRAM dynamic random access memory
- SRAM static random access memory
- ReRAM resistive random access memory
- FRAM ferroelectric random access memory
- MRAM magnetoresistive random access memory
- PRAM phase change random access memory
- the compounds (a fluoride ion source, an oxidant, an acetate solvent, and an additive) and water shown in the following tables were mixed together so that the content of each compound conformed to the values shown in the tables, thereby preparing treatment liquids to be used in each test.
- each polymer used as an additive contains only a representative repeating unit configuring the polymer of the name in the tables.
- polyvinyl alcohol used in examples contains only a repeating unit represented by —CH 2 —CH(OH)—.
- the phenolsulfonic acid formaldehyde condensate used in examples contains only a repeating unit formed by the condensation of phenolsulfonic acid and formaldehyde.
- a semiconductor grade high-purity raw material was used as each raw material. As necessary, a purification treatment was additionally performed on the raw material.
- a substrate on which silicon-germanium (Si:Ge 75:25 (element ratio)) was laminated at a film thickness of 100 nm and a substrate on which polysilicon was laminated at a film thickness of 100 nm were prepared. Each of these substrates was cut in a size of 2 ⁇ 2 cm, thereby obtaining test pieces.
- Each test piece was immersed in the treatment liquid (25° C.) of each of examples or comparative examples for 10 minutes.
- the film thickness of each of the films (the silicon-germanium film and the polysilicon film) before and after immersion was measured with an optical film thickness meter Ellipsometer M-2000 (manufactured by J. A. Woollam), and the dissolution rate ( ⁇ /min) was calculated.
- the surface of the silicon-germanium film after immersion was observed using an atomic force microscope (AFM Dimension Icon, manufactured by Bruker) to determine the surface roughness Ra, and the surface roughness of the silicon-germanium film after treatment was evaluated.
- AFM Dimension Icon manufactured by Bruker
- the evaluation standard is shown below.
- the treatment liquid is determined as having excellent dissolution selectivity for SiGe and being applicable to an etching treatment for SiGe.
- Ra surface roughness
- Ra is more than 0.10 nm and 0.20 nm or less
- Ra is more than 0.20 nm and 0.30 nm or less
- Table 1 shows the formulation of the treatment liquids used in the series of test X and the test results.
- NH4F in the column of “Fluoride ion source” means NH 4 F (ammonium fluoride).
- the specific additive is preferably one or more kinds of substances selected from the group consisting of a nonionic polymer, an anionic polymer, a nonionic surfactant, an anionic surfactant, a cationic surfactant, a nitrogen atom-containing polymer, alkylamine, alkanolamine, and a nitrogen-containing heterocyclic compound, an organic carboxylic acid other than an amino acid, cysteine, a quaternary ammonium salt, and a boron-containing compound, and more preferably one or more kinds of substances selected from the group consisting of polyethylene glycol, polyethyleneimine, dodecyl benzenesulfonic acid, a phenolsulfonic acid formaldehyde condensate, and dodecyl diphenyl ether disulfonic acid (refer to the comparison of results of Examples 6 to 211, and the like).
- one or more kinds of compounds selected from the group consisting of methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, t-butyl acetate, n-butyl acetate, isobutyl acetate, n-amyl acetate, isoamyl acetate, octyl acetate, and 2-ethoxyethyl acetate are preferable, and one or more kinds of compounds selected from the group consisting of ethyl acetate and n-butyl acetate are more preferable (refer to the comparison of results of Examples 5, 32, 216, 221, 226, 253, 437, 442, 447, 452, 457, 462, 467, and 472, and the like).
- the content of the oxidant is preferably 5% to 15% by mass with respect to the total mass of the treatment liquid (refer to the comparison between the results of Example 6 and the results of Example 483, and the like).
- the content of the acetate solvent is preferably 20% to 45% by mass with respect to the total mass of the treatment liquid (refer to the comparison between the results of Example 6 and the results of Example 523, and the like).
- the dissolution rate for silicon-germanium and the surface roughness of the treated silicon-germanium film were evaluated in the same manner as in Test X, except that only the treatment liquid of Example 27 in Test X was used as a treatment liquid, and the ratio between silicon and germanium (Si:Ge (element ratio)) in silicon-germanium was changed.
- SiGe ratio shows the ratio between silicon and germanium (Si:Ge (element ratio)) in the silicon-germanium film used for the test.
- the ratio between silicon and germanium (Si:Ge (element ratio)) in SiGe treated with the treatment liquid is preferably 95:5 to 50:50 and more preferably 85:15 to 65:35.
- HDPE high-density polyethylene
- the two obtained bottles were left to stand at room temperature (25° C.) for 30 days, and then the appearance of each bottle was observed. As a result, no change was observed in the appearance of the bottle with the degassing cap. On the other hand, the bottle with the cap that does not comprise a degassing mechanism was found to be inflated.
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